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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3421

Last change on this file since 3421 was 3421, checked in by gah, 11 years ago
push SendCmd? into base class w/ buffering
File size: 80.8 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name colors }
87	private method ResetColormap { color }
88	private method BuildContourTab {}
89	private method BuildDownloadPopup { widget command }
90	private method Combo { option }
91	private method ConvertToVtkData { dataobj comp }
92	private method DrawLegend {}
93	private method EnterLegend { x y }
94	private method EventuallyRequestLegend {}
95	private method EventuallyResize { w h }
96	private method EventuallyRotate { q }
97	private method GetImage { args }
98	private method GetVtkData { args }
99	private method IsValidObject { dataobj }
100	private method LeaveLegend {}
101	private method MotionLegend { x y }
102	private method PanCamera {}
103	private method RequestLegend {}
104	private method SetCurrentColormap { stylelist }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method GetHeightmapScale {}
108	private method EnterIsoline { x y value }
109	private method LeaveIsoline {}
110	private method SetIsolineTip { x y value }
111	private method ResetAxes {}
112
113	private variable _arcball ""
114	private variable _dlist "" ; # list of data objects
115	private variable _obj2datasets
116	private variable _obj2ovride ; # maps dataobj => style override
117	private variable _comp2scale; # maps dataset to the heightmap scale.
118	private variable _datasets ; # contains all the dataobj-component
119	; # datasets in the server
120	private variable _colormaps ; # contains all the colormaps
121	; # in the server.
122
123	# The name of the current colormap used. The colormap is global to all
124	# heightmaps displayed.
125	private variable _currentColormap "" ;
126
127	private variable _click ; # info used for rotate operations
128	private variable _limits ; # Overall limits for all dataobjs
129	# using the viewer.
130	private variable _view ; # view params for 3D view
131	private variable _settings
132	private variable _initialStyle ""; # First found style in dataobjects.
133	private variable _reset 1; # Indicates if camera needs to be reset
134	# to starting position.
135	private variable _beforeConnect 1; # Indicates if camera needs to be reset
136	# to starting position.
137
138	private variable _first "" ; # This is the topmost dataset.
139	private variable _start 0
140	private variable _title ""
141
142	common _downloadPopup; # download options from popup
143	private common _hardcopy
144	private variable _width 0
145	private variable _height 0
146	private variable _legendWidth 0
147	private variable _legendHeight 0
148	private variable _resizePending 0
149	private variable _numIsolinesPending 0
150	private variable _rotatePending 0
151	private variable _legendPending 0
152	private variable _fieldNames {}
153	private variable _fields
154	private variable _curFldName ""
155	private variable _curFldLabel ""
156	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
157	}
158
159	itk::usual VtkHeightmapViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground -mode
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
168	set _serverType "vtkvis"
169
170	# Rebuild event
171	$_dispatcher register !rebuild
172	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
173
174	# Resize event
175	$_dispatcher register !resize
176	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
177
178	# Rotate event
179	$_dispatcher register !rotate
180	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
181
182	# Legend event
183	$_dispatcher register !legend
184	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
185
186	#
187	# Populate parser with commands handle incoming requests
188	#
189	$_parser alias image [itcl::code $this ReceiveImage]
190	$_parser alias dataset [itcl::code $this ReceiveDataset]
191	$_parser alias legend [itcl::code $this ReceiveLegend]
192	$_parser alias viserror [itcl::code $this ReceiveError]
193
194	# Initialize the view to some default parameters.
195	array set _view {
196	qw 0.36
197	qx 0.25
198	qy 0.50
199	qz 0.70
200	zoom 1.0
201	xpan 0
202	ypan 0
203	ortho 1
204	}
205	set _arcball [blt::arcball create 100 100]
206	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
207	$_arcball quaternion $q
208
209	array set _settings [subst {
210	axisFlymode "static"
211	axisMinorTicks 1
212	stretchToFit 0
213	axisLabels 1
214	axisVisible 1
215	axisXGrid 0
216	axisYGrid 0
217	axisZGrid 0
218	colormapVisible 1
219	edges 0
220	field "Default"
221	heightmapScale 50
222	isHeightmap 0
223	isolineColor black
224	isolinesVisible 1
225	legendVisible 1
226	lighting 1
227	saveLighting 1
228	numIsolines 10
229	opacity 100
230	outline 0
231	wireframe 0
232	saveOpacity 100
233	}]
234
235	itk_component add view {
236	canvas $itk_component(plotarea).view \
237	-highlightthickness 0 -borderwidth 0
238	} {
239	usual
240	ignore -highlightthickness -borderwidth -background
241	}
242
243	itk_component add fieldmenu {
244	menu $itk_component(plotarea).menu \
245	-relief flat \
246	-tearoff no
247	} {
248	usual
249	ignore -background -foreground -relief -tearoff
250	}
251	set c $itk_component(view)
252	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
253	bind $c <4> [itcl::code $this Zoom in 0.25]
254	bind $c <5> [itcl::code $this Zoom out 0.25]
255	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
256	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
257	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
258	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
259	bind $c <Enter> "focus %W"
260	bind $c <Control-F1> [itcl::code $this ToggleConsole]
261
262	# Fix the scrollregion in case we go off screen
263	$c configure -scrollregion [$c bbox all]
264
265	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
266	set _map(cwidth) -1
267	set _map(cheight) -1
268	set _map(zoom) 1.0
269	set _map(original) ""
270
271	set f [$itk_component(main) component controls]
272	itk_component add reset {
273	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
274	-highlightthickness 0 \
275	-image [Rappture::icon reset-view] \
276	-command [itcl::code $this Zoom reset]
277	} {
278	usual
279	ignore -highlightthickness
280	}
281	pack $itk_component(reset) -side top -padx 2 -pady 2
282	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
283
284	itk_component add zoomin {
285	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
286	-highlightthickness 0 \
287	-image [Rappture::icon zoom-in] \
288	-command [itcl::code $this Zoom in]
289	} {
290	usual
291	ignore -highlightthickness
292	}
293	pack $itk_component(zoomin) -side top -padx 2 -pady 2
294	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
295
296	itk_component add zoomout {
297	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
298	-highlightthickness 0 \
299	-image [Rappture::icon zoom-out] \
300	-command [itcl::code $this Zoom out]
301	} {
302	usual
303	ignore -highlightthickness
304	}
305	pack $itk_component(zoomout) -side top -padx 2 -pady 2
306	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
307
308	itk_component add mode {
309	Rappture::PushButton $f.mode \
310	-onimage [Rappture::icon surface] \
311	-offimage [Rappture::icon surface] \
312	-variable [itcl::scope _settings(isHeightmap)] \
313	-command [itcl::code $this AdjustSetting isHeightmap] \
314	}
315	Rappture::Tooltip::for $itk_component(mode) \
316	"Toggle the surface/contour on/off"
317	pack $itk_component(mode) -padx 2 -pady 2
318
319	if { [catch {
320	BuildContourTab
321	BuildAxisTab
322	BuildCameraTab
323	} errs] != 0 } {
324	global errorInfo
325	puts stderr "errs=$errs errorInfo=$errorInfo"
326	}
327	set _image(legend) [image create photo]
328
329	# Hack around the Tk panewindow. The problem is that the requested
330	# size of the 3d view isn't set until an image is retrieved from
331	# the server. So the panewindow uses the tiny size.
332	set w 10000
333	pack forget $itk_component(view)
334	blt::table $itk_component(plotarea) \
335	0,0 $itk_component(view) -fill both -reqwidth $w
336	blt::table configure $itk_component(plotarea) c1 -resize none
337
338	# Bindings for panning via mouse
339	bind $itk_component(view) <ButtonPress-2> \
340	[itcl::code $this Pan click %x %y]
341	bind $itk_component(view) <B2-Motion> \
342	[itcl::code $this Pan drag %x %y]
343	bind $itk_component(view) <ButtonRelease-2> \
344	[itcl::code $this Pan release %x %y]
345
346	bind $itk_component(view) <ButtonRelease-3> \
347	[itcl::code $this Pick %x %y]
348
349	# Bindings for panning via keyboard
350	bind $itk_component(view) <KeyPress-Left> \
351	[itcl::code $this Pan set -10 0]
352	bind $itk_component(view) <KeyPress-Right> \
353	[itcl::code $this Pan set 10 0]
354	bind $itk_component(view) <KeyPress-Up> \
355	[itcl::code $this Pan set 0 -10]
356	bind $itk_component(view) <KeyPress-Down> \
357	[itcl::code $this Pan set 0 10]
358	bind $itk_component(view) <Shift-KeyPress-Left> \
359	[itcl::code $this Pan set -2 0]
360	bind $itk_component(view) <Shift-KeyPress-Right> \
361	[itcl::code $this Pan set 2 0]
362	bind $itk_component(view) <Shift-KeyPress-Up> \
363	[itcl::code $this Pan set 0 -2]
364	bind $itk_component(view) <Shift-KeyPress-Down> \
365	[itcl::code $this Pan set 0 2]
366
367	# Bindings for zoom via keyboard
368	bind $itk_component(view) <KeyPress-Prior> \
369	[itcl::code $this Zoom out]
370	bind $itk_component(view) <KeyPress-Next> \
371	[itcl::code $this Zoom in]
372
373	bind $itk_component(view) <Enter> "focus $itk_component(view)"
374
375	if {[string equal "x11" [tk windowingsystem]]} {
376	# Bindings for zoom via mouse
377	bind $itk_component(view) <4> [itcl::code $this Zoom out]
378	bind $itk_component(view) <5> [itcl::code $this Zoom in]
379	}
380
381	set _image(download) [image create photo]
382
383	eval itk_initialize $args
384	Connect
385	set _beforeConnect 0
386	}
387
388	# ----------------------------------------------------------------------
389	# DESTRUCTOR
390	# ----------------------------------------------------------------------
391	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
392	Disconnect
393	image delete $_image(plot)
394	image delete $_image(download)
395	catch { blt::arcball destroy $_arcball }
396	}
397
398	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
399	if { $_width < 2 } {
400	set _width 500
401	}
402	if { $_height < 2 } {
403	set _height 500
404	}
405	set _start [clock clicks -milliseconds]
406	SendCmd "screen size [expr $_width - 20] $_height"
407	SendCmd "camera reset"
408
409	set font "Arial 8"
410	set lh [font metrics $font -linespace]
411	set h [expr {$_height - 2 * ($lh + 2)}]
412	if { $h != $_legendHeight } {
413	EventuallyRequestLegend
414	} else {
415	DrawLegend
416	}
417	set _resizePending 0
418	}
419
420	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
421	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
422	SendCmd "camera orient $q"
423	set _rotatePending 0
424	}
425
426	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
427	if { !$_legendPending } {
428	set _legendPending 1
429	$_dispatcher event -idle !legend
430	}
431	}
432
433	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
434	set _width $w
435	set _height $h
436	$_arcball resize $w $h
437	if { !$_resizePending } {
438	set _resizePending 1
439	$_dispatcher event -after 400 !resize
440	}
441	}
442
443	set rotate_delay 100
444
445	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
446	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
447	if { !$_rotatePending } {
448	set _rotatePending 1
449	global rotate_delay
450	$_dispatcher event -after $rotate_delay !rotate
451	}
452	}
453
454	# ----------------------------------------------------------------------
455	# USAGE: add <dataobj> ?<settings>?
456	#
457	# Clients use this to add a data object to the plot. The optional
458	# <settings> are used to configure the plot. Allowed settings are
459	# -color, -brightness, -width, -linestyle, and -raise.
460	# ----------------------------------------------------------------------
461	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
462	array set params {
463	-color auto
464	-width 1
465	-linestyle solid
466	-brightness 0
467	-raise 0
468	-description ""
469	-param ""
470	-type ""
471	}
472	array set params $settings
473	set params(-description) ""
474	set params(-param) ""
475	foreach {opt val} $settings {
476	if {![info exists params($opt)]} {
477	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
478	}
479	set params($opt) $val
480	}
481	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
482	# can't handle -autocolors yet
483	set params(-color) white
484	}
485	set pos [lsearch -exact $dataobj $_dlist]
486	if {$pos < 0} {
487	lappend _dlist $dataobj
488	}
489	set _obj2ovride($dataobj-color) $params(-color)
490	set _obj2ovride($dataobj-width) $params(-width)
491	set _obj2ovride($dataobj-raise) $params(-raise)
492	$_dispatcher event -idle !rebuild
493	}
494
495
496	# ----------------------------------------------------------------------
497	# USAGE: delete ?<dataobj1> <dataobj2> ...?
498	#
499	# Clients use this to delete a dataobj from the plot. If no dataobjs
500	# are specified, then all dataobjs are deleted. No data objects are
501	# deleted. They are only removed from the display list.
502	#
503	# ----------------------------------------------------------------------
504	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
505	if { [llength $args] == 0} {
506	set args $_dlist
507	}
508	# Delete all specified dataobjs
509	set changed 0
510	foreach dataobj $args {
511	set pos [lsearch -exact $_dlist $dataobj]
512	if { $pos < 0 } {
513	continue; # Don't know anything about it.
514	}
515	# Remove it from the dataobj list.
516	set _dlist [lreplace $_dlist $pos $pos]
517	array unset _obj2ovride $dataobj-*
518	array unset _settings $dataobj-*
519	# Append to the end of the dataobj list.
520	#lappend _dlist $dataobj
521	set changed 1
522	}
523	# If anything changed, then rebuild the plot
524	if { $changed } {
525	$_dispatcher event -idle !rebuild
526	}
527	}
528
529	# ----------------------------------------------------------------------
530	# USAGE: get ?-objects?
531	# USAGE: get ?-visible?
532	# USAGE: get ?-image view?
533	#
534	# Clients use this to query the list of objects being plotted, in
535	# order from bottom to top of this result. The optional "-image"
536	# flag can also request the internal images being shown.
537	# ----------------------------------------------------------------------
538	itcl::body Rappture::VtkHeightmapViewer::get {args} {
539	if {[llength $args] == 0} {
540	set args "-objects"
541	}
542
543	set op [lindex $args 0]
544	switch -- $op {
545	"-objects" {
546	# put the dataobj list in order according to -raise options
547	set dlist {}
548	foreach dataobj $_dlist {
549	if { ![IsValidObject $dataobj] } {
550	continue
551	}
552	if {[info exists _obj2ovride($dataobj-raise)] &&
553	$_obj2ovride($dataobj-raise)} {
554	set dlist [linsert $dlist 0 $dataobj]
555	} else {
556	lappend dlist $dataobj
557	}
558	}
559	return $dlist
560	}
561	"-visible" {
562	set dlist {}
563	foreach dataobj $_dlist {
564	if { ![IsValidObject $dataobj] } {
565	continue
566	}
567	if { ![info exists _obj2ovride($dataobj-raise)] } {
568	# No setting indicates that the object isn't visible.
569	continue
570	}
571	# Otherwise use the -raise parameter to put the object to
572	# the front of the list.
573	if { $_obj2ovride($dataobj-raise) } {
574	set dlist [linsert $dlist 0 $dataobj]
575	} else {
576	lappend dlist $dataobj
577	}
578	}
579	return $dlist
580	}
581	-image {
582	if {[llength $args] != 2} {
583	error "wrong # args: should be \"get -image view\""
584	}
585	switch -- [lindex $args end] {
586	view {
587	return $_image(plot)
588	}
589	default {
590	error "bad image name \"[lindex $args end]\": should be view"
591	}
592	}
593	}
594	default {
595	error "bad option \"$op\": should be -objects or -image"
596	}
597	}
598	}
599
600	# ----------------------------------------------------------------------
601	# USAGE: scale ?<data1> <data2> ...?
602	#
603	# Sets the default limits for the overall plot according to the
604	# limits of the data for all of the given <data> objects. This
605	# accounts for all objects--even those not showing on the screen.
606	# Because of this, the limits are appropriate for all objects as
607	# the user scans through data in the ResultSet viewer.
608	# ----------------------------------------------------------------------
609	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
610	array unset _limits
611	foreach dataobj $args {
612	array set bounds [limits $dataobj]
613	foreach axis { x y v } {
614	foreach {min max} $bounds($axis) break
615	if { ![info exists _limits($axis)] } {
616	set _limits($axis) [list $min $max]
617	continue
618	}
619	foreach {amin amax} $_limits($axis) break
620	if { $amin > $min } {
621	set amin $min
622	}
623	if { $amax < $max } {
624	set amax $max
625	}
626	set _limits($axis) [list $amin $amax]
627	}
628	}
629	}
630
631	# ----------------------------------------------------------------------
632	# USAGE: download coming
633	# USAGE: download controls <downloadCommand>
634	# USAGE: download now
635	#
636	# Clients use this method to create a downloadable representation
637	# of the plot. Returns a list of the form {ext string}, where
638	# "ext" is the file extension (indicating the type of data) and
639	# "string" is the data itself.
640	# ----------------------------------------------------------------------
641	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
642	switch $option {
643	coming {
644	if {[catch {
645	blt::winop snap $itk_component(plotarea) $_image(download)
646	}]} {
647	$_image(download) configure -width 1 -height 1
648	$_image(download) put #000000
649	}
650	}
651	controls {
652	set popup .vtkviewerdownload
653	if { ![winfo exists .vtkviewerdownload] } {
654	set inner [BuildDownloadPopup $popup [lindex $args 0]]
655	} else {
656	set inner [$popup component inner]
657	}
658	set _downloadPopup(image_controls) $inner.image_frame
659	set num [llength [get]]
660	set num [expr {($num == 1) ? "1 result" : "$num results"}]
661	set word [Rappture::filexfer::label downloadWord]
662	$inner.summary configure -text "$word $num in the following format:"
663	update idletasks ;# Fix initial sizes
664	return $popup
665	}
666	now {
667	set popup .vtkviewerdownload
668	if {[winfo exists .vtkviewerdownload]} {
669	$popup deactivate
670	}
671	switch -- $_downloadPopup(format) {
672	"image" {
673	return [$this GetImage [lindex $args 0]]
674	}
675	"vtk" {
676	return [$this GetVtkData [lindex $args 0]]
677	}
678	}
679	return ""
680	}
681	default {
682	error "bad option \"$option\": should be coming, controls, now"
683	}
684	}
685	}
686
687	# ----------------------------------------------------------------------
688	# USAGE: Connect ?<host:port>,<host:port>...?
689	#
690	# Clients use this method to establish a connection to a new
691	# server, or to reestablish a connection to the previous server.
692	# Any existing connection is automatically closed.
693	# ----------------------------------------------------------------------
694	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
695	global readyForNextFrame
696	set readyForNextFrame 1
697	set _reset 1
698	set _hosts [GetServerList "vtkvis"]
699	if { "" == $_hosts } {
700	return 0
701	}
702	set result [VisViewer::Connect $_hosts]
703	if { $result } {
704	set w [winfo width $itk_component(view)]
705	set h [winfo height $itk_component(view)]
706	EventuallyResize $w $h
707	}
708	return $result
709	}
710
711	#
712	# isconnected --
713	#
714	# Indicates if we are currently connected to the visualization server.
715	#
716	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
717	return [VisViewer::IsConnected]
718	}
719
720	#
721	# disconnect --
722	#
723	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
724	Disconnect
725	set _reset 1
726	}
727
728	#
729	# Disconnect --
730	#
731	# Clients use this method to disconnect from the current rendering
732	# server.
733	#
734	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
735	VisViewer::Disconnect
736
737	$_dispatcher cancel !rebuild
738	$_dispatcher cancel !resize
739	$_dispatcher cancel !rotate
740	$_dispatcher cancel !legend
741	# disconnected -- no more data sitting on server
742	array unset _datasets
743	array unset _data
744	array unset _colormaps
745	array unset _obj2datasets
746	global readyForNextFrame
747	set readyForNextFrame 1
748	}
749
750	# ----------------------------------------------------------------------
751	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
752	#
753	# Invoked automatically whenever the "image" command comes in from
754	# the rendering server. Indicates that binary image data with the
755	# specified <size> will follow.
756	# ----------------------------------------------------------------------
757	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
758	global readyForNextFrame
759	set readyForNextFrame 1
760	array set info {
761	-token "???"
762	-bytes 0
763	-type image
764	}
765	array set info $args
766	set bytes [ReceiveBytes $info(-bytes)]
767	if { $info(-type) == "image" } {
768	if 0 {
769	set f [open "last.ppm" "w"]
770	puts $f $bytes
771	close $f
772	}
773	$_image(plot) configure -data $bytes
774	set time [clock seconds]
775	set date [clock format $time]
776	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
777	if { $_start > 0 } {
778	set finish [clock clicks -milliseconds]
779	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
780	set _start 0
781	}
782	} elseif { $info(type) == "print" } {
783	set tag $this-print-$info(-token)
784	set _hardcopy($tag) $bytes
785	}
786	}
787
788	#
789	# ReceiveDataset --
790	#
791	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
792	if { ![isconnected] } {
793	return
794	}
795	set option [lindex $args 0]
796	switch -- $option {
797	"scalar" {
798	set option [lindex $args 1]
799	switch -- $option {
800	"world" {
801	foreach { x y z value tag } [lrange $args 2 end] break
802	}
803	"pixel" {
804	foreach { x y value tag } [lrange $args 2 end] break
805	}
806	}
807	}
808	"vector" {
809	set option [lindex $args 1]
810	switch -- $option {
811	"world" {
812	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
813	}
814	"pixel" {
815	foreach { x y vx vy vz tag } [lrange $args 2 end] break
816	}
817	}
818	}
819	"names" {
820	foreach { name } [lindex $args 1] {
821	#puts stderr "Dataset: $name"
822	}
823	}
824	default {
825	error "unknown dataset option \"$option\" from server"
826	}
827	}
828	}
829
830	# ----------------------------------------------------------------------
831	# USAGE: Rebuild
832	#
833	# Called automatically whenever something changes that affects the
834	# data in the widget. Clears any existing data and rebuilds the
835	# widget to display new data.
836	# ----------------------------------------------------------------------
837	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
838	set w [winfo width $itk_component(view)]
839	set h [winfo height $itk_component(view)]
840	if { $w < 2 \|\| $h < 2 } {
841	$_dispatcher event -idle !rebuild
842	return
843	}
844
845	StartBufferingCommands
846	# Turn on buffering of commands to the server. We don't want to
847	# be preempted by a server disconnect/reconnect (which automatically
848	# generates a new call to Rebuild).
849	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
850	set _width $w
851	set _height $h
852	$_arcball resize $w $h
853	DoResize
854	if { $_settings(stretchToFit) } {
855	AdjustSetting stretchToFit
856	}
857	}
858	if { $_reset } {
859	if { $_reportClientInfo } {
860	# Tell the server the name of the tool, the version, and dataset
861	# that we are rendering. Have to do it here because we don't know
862	# what data objects are using the renderer until be get here.
863	global env
864
865	set info {}
866	set user "???"
867	if { [info exists env(USER)] } {
868	set user $env(USER)
869	}
870	set session "???"
871	if { [info exists env(SESSION)] } {
872	set session $env(SESSION)
873	}
874	lappend info "hub" [exec hostname]
875	lappend info "client" "vtkheightmapviewer"
876	lappend info "user" $user
877	lappend info "session" $session
878	SendCmd "clientinfo [list $info]"
879	}
880	InitSettings isHeightmap background
881	#
882	# Reset the camera and other view parameters
883	#
884	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
885	SendCmd "axis lrot z 90"
886	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
887	$_arcball quaternion $q
888	if {$_settings(isHeightmap) } {
889	if { $_view(ortho)} {
890	SendCmd "camera mode ortho"
891	} else {
892	SendCmd "camera mode persp"
893	}
894	SendCmd "camera reset"
895	DoRotate
896	}
897	PanCamera
898	SendCmd "imgflush"
899	}
900
901	set _first ""
902	# Start off with no datasets are visible.
903	SendCmd "dataset visible 0"
904	set scale [GetHeightmapScale]
905	foreach dataobj [get -objects] {
906	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
907	set _first $dataobj
908	}
909	scale $dataobj
910	set _obj2datasets($dataobj) ""
911	foreach comp [$dataobj components] {
912	set tag $dataobj-$comp
913	if { ![info exists _datasets($tag)] } {
914	set bytes [$dataobj vtkdata $comp]
915	if 0 {
916	set f [open /tmp/vtkheightmap.vtk "w"]
917	puts $f $bytes
918	close $f
919	}
920	set length [string length $bytes]
921	if { $_reportClientInfo } {
922	set info {}
923	lappend info "tool_id" [$dataobj hints toolId]
924	lappend info "tool_name" [$dataobj hints toolName]
925	lappend info "tool_version" [$dataobj hints toolRevision]
926	lappend info "tool_title" [$dataobj hints toolTitle]
927	lappend info "dataset_label" [$dataobj hints label]
928	lappend info "dataset_size" $length
929	lappend info "dataset_tag" $tag
930	SendCmd [list "clientinfo" $info]
931	}
932	SendCmd "dataset add $tag data follows $length"
933	append _outbuf $bytes
934	set _datasets($tag) 1
935	SetObjectStyle $dataobj $comp
936	}
937	lappend _obj2datasets($dataobj) $tag
938	if { [info exists _obj2ovride($dataobj-raise)] } {
939	SendCmd "heightmap visible 1 $tag"
940	}
941	if { ![info exists _comp2scale($tag)] \|\|
942	$_comp2scale($tag) != $scale } {
943	SendCmd "heightmap heightscale $scale $tag"
944	set _comp2scale($tag) $scale
945	}
946	}
947	}
948	if { $_first != "" } {
949	$itk_component(field) choices delete 0 end
950	$itk_component(fieldmenu) delete 0 end
951	array unset _fields
952	set _curFldName ""
953	foreach cname [$_first components] {
954	foreach fname [$_first fieldnames $cname] {
955	if { [info exists _fields($fname)] } {
956	continue
957	}
958	foreach { label units components } \
959	[$_first fieldinfo $fname] break
960	$itk_component(field) choices insert end "$fname" "$label"
961	$itk_component(fieldmenu) add radiobutton -label "$label" \
962	-value $label -variable [itcl::scope _curFldLabel] \
963	-selectcolor red \
964	-activebackground $itk_option(-plotbackground) \
965	-activeforeground $itk_option(-plotforeground) \
966	-font "Arial 8" \
967	-command [itcl::code $this Combo invoke]
968	set _fields($fname) [list $label $units $components]
969	if { $_curFldName == "" } {
970	set _curFldName $fname
971	set _curFldLabel $label
972	}
973	}
974	}
975	$itk_component(field) value $_curFldLabel
976	}
977	InitSettings stretchToFit
978
979	if { $_reset } {
980	SendCmd "axis tickpos outside"
981	foreach axis { x y z } {
982	SendCmd "axis lformat $axis %g"
983	}
984
985	foreach axis { x y z } {
986	set label [$_first hints ${axis}label]
987	if { $label == "" } {
988	if {$axis == "z"} {
989	if { $_curFldName == "component" } {
990	set label [string toupper $axis]
991	} else {
992	set label $_curFldLabel
993	}
994	} else {
995	set label [string toupper $axis]
996	}
997	}
998	# May be a space in the axis label.
999	SendCmd [list axis name $axis $label]
1000
1001	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1002	set units [lindex $_fields($_curFldName) 1]
1003	} else {
1004	set units [$_first hints ${axis}units]
1005	}
1006	if { $units != "" } {
1007	# May be a space in the axis units.
1008	SendCmd [list axis units $axis $units]
1009	}
1010	}
1011	#
1012	# Reset the camera and other view parameters
1013	#
1014	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1015	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1016	ResetAxes
1017	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1018	$_arcball quaternion $q
1019	if {$_settings(isHeightmap) } {
1020	if { $_view(ortho)} {
1021	SendCmd "camera mode ortho"
1022	} else {
1023	SendCmd "camera mode persp"
1024	}
1025	SendCmd "camera reset"
1026	DoRotate
1027	}
1028	PanCamera
1029	InitSettings axisXGrid axisYGrid axisZGrid \
1030	axisVisible axisLabels
1031	InitSettings opacity heightmapScale lighting edges wireframe \
1032	colormap field outline isHeightmap
1033	if { [array size _fields] < 2 } {
1034	blt::table forget $itk_component(field) $itk_component(field_l)
1035	}
1036	set _reset 0
1037	}
1038	global readyForNextFrame
1039	set readyForNextFrame 0; # Don't advance to the next frame
1040
1041	# Actually write the commands to the server socket. If it fails, we don't
1042	# care. We're finished here.
1043	blt::busy hold $itk_component(hull)
1044	StopBufferingCommands
1045	blt::busy release $itk_component(hull)
1046	}
1047
1048	# ----------------------------------------------------------------------
1049	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1050	#
1051	# Returns a list of server IDs for the current datasets being displayed. This
1052	# is normally a single ID, but it might be a list of IDs if the current data
1053	# object has multiple components.
1054	# ----------------------------------------------------------------------
1055	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1056	set flag [lindex $args 0]
1057	switch -- $flag {
1058	"-all" {
1059	if { [llength $args] > 1 } {
1060	error "CurrentDatasets: can't specify dataobj after \"-all\""
1061	}
1062	set dlist [get -objects]
1063	}
1064	"-visible" {
1065	if { [llength $args] > 1 } {
1066	set dlist {}
1067	set args [lrange $args 1 end]
1068	foreach dataobj $args {
1069	if { [info exists _obj2ovride($dataobj-raise)] } {
1070	lappend dlist $dataobj
1071	}
1072	}
1073	} else {
1074	set dlist [get -visible]
1075	}
1076	}
1077	default {
1078	set dlist $args
1079	}
1080	}
1081	set rlist ""
1082	foreach dataobj $dlist {
1083	foreach comp [$dataobj components] {
1084	set tag $dataobj-$comp
1085	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1086	lappend rlist $tag
1087	}
1088	}
1089	}
1090	return $rlist
1091	}
1092
1093	# ----------------------------------------------------------------------
1094	# USAGE: Zoom in
1095	# USAGE: Zoom out
1096	# USAGE: Zoom reset
1097	#
1098	# Called automatically when the user clicks on one of the zoom
1099	# controls for this widget. Changes the zoom for the current view.
1100	# ----------------------------------------------------------------------
1101	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1102	switch -- $option {
1103	"in" {
1104	set _view(zoom) [expr {$_view(zoom)*1.25}]
1105	SendCmd "camera zoom $_view(zoom)"
1106	}
1107	"out" {
1108	set _view(zoom) [expr {$_view(zoom)*0.8}]
1109	SendCmd "camera zoom $_view(zoom)"
1110	}
1111	"reset" {
1112	array set _view {
1113	qw 0.36
1114	qx 0.25
1115	qy 0.50
1116	qz 0.70
1117	zoom 1.0
1118	xpan 0
1119	ypan 0
1120	}
1121	if { $_first != "" } {
1122	set location [$_first hints camera]
1123	if { $location != "" } {
1124	array set _view $location
1125	}
1126	}
1127	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1128	$_arcball quaternion $q
1129	SendCmd "camera reset"
1130	if {$_settings(isHeightmap) } {
1131	DoRotate
1132	}
1133	}
1134	}
1135	}
1136
1137	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1138	set x $_view(xpan)
1139	set y $_view(ypan)
1140	SendCmd "camera pan $x $y"
1141	}
1142
1143
1144	# ----------------------------------------------------------------------
1145	# USAGE: Rotate click <x> <y>
1146	# USAGE: Rotate drag <x> <y>
1147	# USAGE: Rotate release <x> <y>
1148	#
1149	# Called automatically when the user clicks/drags/releases in the
1150	# plot area. Moves the plot according to the user's actions.
1151	# ----------------------------------------------------------------------
1152	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1153	switch -- $option {
1154	"click" {
1155	$itk_component(view) configure -cursor fleur
1156	set _click(x) $x
1157	set _click(y) $y
1158	}
1159	"drag" {
1160	if {[array size _click] == 0} {
1161	Rotate click $x $y
1162	} else {
1163	set w [winfo width $itk_component(view)]
1164	set h [winfo height $itk_component(view)]
1165	if {$w <= 0 \|\| $h <= 0} {
1166	return
1167	}
1168
1169	if {[catch {
1170	# this fails sometimes for no apparent reason
1171	set dx [expr {double($x-$_click(x))/$w}]
1172	set dy [expr {double($y-$_click(y))/$h}]
1173	}]} {
1174	return
1175	}
1176	if { $dx == 0 && $dy == 0 } {
1177	return
1178	}
1179	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1180	EventuallyRotate $q
1181	set _click(x) $x
1182	set _click(y) $y
1183	}
1184	}
1185	"release" {
1186	Rotate drag $x $y
1187	$itk_component(view) configure -cursor ""
1188	catch {unset _click}
1189	}
1190	default {
1191	error "bad option \"$option\": should be click, drag, release"
1192	}
1193	}
1194	}
1195
1196	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1197	foreach tag [CurrentDatasets -visible] {
1198	SendCmd "dataset getscalar pixel $x $y $tag"
1199	}
1200	}
1201
1202	# ----------------------------------------------------------------------
1203	# USAGE: $this Pan click x y
1204	# $this Pan drag x y
1205	# $this Pan release x y
1206	#
1207	# Called automatically when the user clicks on one of the zoom
1208	# controls for this widget. Changes the zoom for the current view.
1209	# ----------------------------------------------------------------------
1210	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1211	switch -- $option {
1212	"set" {
1213	set w [winfo width $itk_component(view)]
1214	set h [winfo height $itk_component(view)]
1215	set x [expr $x / double($w)]
1216	set y [expr $y / double($h)]
1217	set _view(xpan) [expr $_view(xpan) + $x]
1218	set _view(ypan) [expr $_view(ypan) + $y]
1219	PanCamera
1220	return
1221	}
1222	"click" {
1223	set _click(x) $x
1224	set _click(y) $y
1225	$itk_component(view) configure -cursor hand1
1226	}
1227	"drag" {
1228	if { ![info exists _click(x)] } {
1229	set _click(x) $x
1230	}
1231	if { ![info exists _click(y)] } {
1232	set _click(y) $y
1233	}
1234	set w [winfo width $itk_component(view)]
1235	set h [winfo height $itk_component(view)]
1236	set dx [expr ($_click(x) - $x)/double($w)]
1237	set dy [expr ($_click(y) - $y)/double($h)]
1238	set _click(x) $x
1239	set _click(y) $y
1240	set _view(xpan) [expr $_view(xpan) - $dx]
1241	set _view(ypan) [expr $_view(ypan) - $dy]
1242	PanCamera
1243	}
1244	"release" {
1245	Pan drag $x $y
1246	$itk_component(view) configure -cursor ""
1247	}
1248	default {
1249	error "unknown option \"$option\": should set, click, drag, or release"
1250	}
1251	}
1252	}
1253
1254	# ----------------------------------------------------------------------
1255	# USAGE: InitSettings <what> ?<value>?
1256	#
1257	# Used internally to update rendering settings whenever parameters
1258	# change in the popup settings panel. Sends the new settings off
1259	# to the back end.
1260	# ----------------------------------------------------------------------
1261	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1262	foreach spec $args {
1263	if { [info exists _settings($_first-$spec)] } {
1264	# Reset global setting with dataobj specific setting
1265	set _settings($spec) $_settings($_first-$spec)
1266	}
1267	AdjustSetting $spec
1268	}
1269	}
1270
1271	#
1272	# AdjustSetting --
1273	#
1274	# Changes/updates a specific setting in the widget. There are
1275	# usually user-setable option. Commands are sent to the render
1276	# server.
1277	#
1278	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1279	if { $_beforeConnect } {
1280	return
1281	}
1282	switch -- $what {
1283	"axisFlymode" {
1284	set mode [$itk_component(axisflymode) value]
1285	set mode [$itk_component(axisflymode) translate $mode]
1286	set _settings($what) $mode
1287	SendCmd "axis flymode $mode"
1288	}
1289	"axisLabels" {
1290	set bool $_settings(axisLabels)
1291	SendCmd "axis labels all $bool"
1292	}
1293	"axisMinorTicks" {
1294	set bool $_settings(axisMinorTicks)
1295	foreach axis { x y z } {
1296	SendCmd "axis minticks ${axis} $bool"
1297	}
1298	}
1299	"axisVisible" {
1300	set bool $_settings(axisVisible)
1301	SendCmd "axis visible all $bool"
1302	}
1303	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1304	set axis [string tolower [string range $what 4 4]]
1305	set bool $_settings($what)
1306	SendCmd "axis grid $axis $bool"
1307	}
1308	"background" {
1309	set bgcolor [$itk_component(background) value]
1310	array set fgcolors {
1311	"black" "white"
1312	"white" "black"
1313	"grey" "black"
1314	}
1315	configure -plotbackground $bgcolor \
1316	-plotforeground $fgcolors($bgcolor)
1317	$itk_component(view) delete "legend"
1318	DrawLegend
1319	}
1320	"colormap" {
1321	StartBufferingCommands
1322	set color [$itk_component(colormap) value]
1323	set _settings(colormap) $color
1324	if { $color == "none" } {
1325	if { $_settings(colormapVisible) } {
1326	SendCmd "heightmap surface 0"
1327	set _settings(colormapVisible) 0
1328	}
1329	} else {
1330	if { !$_settings(colormapVisible) } {
1331	SendCmd "heightmap surface 1"
1332	set _settings(colormapVisible) 1
1333	}
1334	ResetColormap $color
1335	SendCmd "heightmap colormap $_currentColormap"
1336	}
1337	#SendCmd "heightmap colormode scalar $_curFldName"
1338	#SendCmd "dataset scalar $_curFldName"
1339	StopBufferingCommands
1340	EventuallyRequestLegend
1341	}
1342	"colormapVisible" {
1343	set bool $_settings($what)
1344	SendCmd "heightmap surface $bool"
1345	}
1346	"edges" {
1347	set bool $_settings(edges)
1348	SendCmd "heightmap edges $bool"
1349	}
1350	"field" {
1351	set label [$itk_component(field) value]
1352	set fname [$itk_component(field) translate $label]
1353	set _settings(field) $fname
1354	if { [info exists _fields($fname)] } {
1355	foreach { label units components } $_fields($fname) break
1356	if { $components > 1 } {
1357	set _colorMode vmag
1358	} else {
1359	set _colorMode scalar
1360	}
1361	set _curFldName $fname
1362	set _curFldLabel $label
1363	} else {
1364	puts stderr "unknown field \"$fname\""
1365	return
1366	}
1367	set label [$_first hints zlabel]
1368	if { $label == "" } {
1369	if { $_curFldName == "component" } {
1370	set label Z
1371	} else {
1372	set label $_curFldLabel
1373	}
1374	} else {
1375	set label Z
1376	}
1377	# May be a space in the axis label.
1378	SendCmd [list axis name z $label]
1379
1380	if { [$_first hints zunits] == "" } {
1381	set units [lindex $_fields($_curFldName) 1]
1382	} else {
1383	set units [$_first hints zunits]
1384	}
1385	if { $units != "" } {
1386	# May be a space in the axis units.
1387	SendCmd [list axis units $axis $units]
1388	}
1389	# Get the new limits because the field changed.
1390	scale $_dlist
1391	ResetAxes
1392	SendCmd "camera reset"
1393	SendCmd "heightmap colormode scalar $_curFldName"
1394	SendCmd "dataset scalar $_curFldName"
1395	DrawLegend
1396	}
1397	"heightmapScale" {
1398	if { $_settings(isHeightmap) } {
1399	set scale [GetHeightmapScale]
1400	foreach dataset [CurrentDatasets -all] {
1401	SendCmd "heightmap heightscale $scale $dataset"
1402	set _comp2scale($dataset) $scale
1403	}
1404	ResetAxes
1405	}
1406	}
1407	"isHeightmap" {
1408	set bool $_settings(isHeightmap)
1409	set c $itk_component(view)
1410	StartBufferingCommands
1411	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1412	if { $bool } {
1413	set _settings(heightmapScale) 50
1414	set _settings(opacity) $_settings(saveOpacity)
1415	set _settings(lighting) $_settings(saveLighting)
1416	} else {
1417	set _settings(heightmapScale) 0
1418	set _settings(lighting) 0
1419	set _settings(opacity) 100
1420	}
1421	AdjustSetting lighting
1422	AdjustSetting opacity
1423	set scale [GetHeightmapScale]
1424	foreach dataset [CurrentDatasets -all] {
1425	SendCmd "heightmap heightscale $scale $dataset"
1426	set _comp2scale($dataset) $scale
1427	}
1428	if { $bool } {
1429	$itk_component(lighting) configure -state normal
1430	$itk_component(opacity) configure -state normal
1431	$itk_component(scale) configure -state normal
1432	$itk_component(opacity_l) configure -state normal
1433	$itk_component(scale_l) configure -state normal
1434	if {$_view(ortho)} {
1435	SendCmd "camera mode ortho"
1436	} else {
1437	SendCmd "camera mode persp"
1438	}
1439	} else {
1440	$itk_component(lighting) configure -state disabled
1441	$itk_component(opacity) configure -state disabled
1442	$itk_component(scale) configure -state disabled
1443	$itk_component(opacity_l) configure -state disabled
1444	$itk_component(scale_l) configure -state disabled
1445	SendCmd "camera mode image"
1446	}
1447	if {$_settings(stretchToFit)} {
1448	if {$scale == 0} {
1449	SendCmd "camera aspect window"
1450	} else {
1451	SendCmd "camera aspect square"
1452	}
1453	}
1454	ResetAxes
1455	SendCmd "camera reset"
1456	if { $bool } {
1457	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1458	$_arcball quaternion $q
1459	SendCmd "camera orient $q"
1460	} else {
1461	bind $c <ButtonPress-1> {}
1462	bind $c <B1-Motion> {}
1463	bind $c <ButtonRelease-1> {}
1464	}
1465	# Fix the mouse bindings for rotation/panning and the
1466	# camera mode. Ideally we'd create a bindtag for these.
1467	if { $bool } {
1468	# Bindings for rotation via mouse
1469	bind $c <ButtonPress-1> \
1470	[itcl::code $this Rotate click %x %y]
1471	bind $c <B1-Motion> \
1472	[itcl::code $this Rotate drag %x %y]
1473	bind $c <ButtonRelease-1> \
1474	[itcl::code $this Rotate release %x %y]
1475	}
1476	StopBufferingCommands
1477	}
1478	"isolineColor" {
1479	set color [$itk_component(isolinecolor) value]
1480	if { $color == "none" } {
1481	if { $_settings(isolinesVisible) } {
1482	SendCmd "heightmap isolines 0"
1483	set _settings(isolinesVisible) 0
1484	}
1485	} else {
1486	if { !$_settings(isolinesVisible) } {
1487	SendCmd "heightmap isolines 1"
1488	set _settings(isolinesVisible) 1
1489	}
1490	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1491	}
1492	DrawLegend
1493	}
1494	"isolinesVisible" {
1495	set bool $_settings($what)
1496	SendCmd "heightmap isolines $bool"
1497	DrawLegend
1498	}
1499	"legendVisible" {
1500	if { !$_settings($what) } {
1501	$itk_component(view) delete legend
1502	}
1503	DrawLegend
1504	}
1505	"lighting" {
1506	if { $_settings(isHeightmap) } {
1507	set _settings(saveLighting) $_settings(lighting)
1508	set bool $_settings($what)
1509	SendCmd "heightmap lighting $bool"
1510	} else {
1511	SendCmd "heightmap lighting 0"
1512	}
1513	}
1514	"numIsolines" {
1515	set _settings(numIsolines) [$itk_component(numisolines) value]
1516	SendCmd "heightmap numcontours $_settings(numIsolines)"
1517	DrawLegend
1518	}
1519	"opacity" {
1520	if { $_settings(isHeightmap) } {
1521	set _settings(saveOpacity) $_settings(opacity)
1522	set val $_settings(opacity)
1523	set sval [expr { 0.01 * double($val) }]
1524	SendCmd "heightmap opacity $sval"
1525	} else {
1526	SendCmd "heightmap opacity 1"
1527	}
1528	}
1529	"outline" {
1530	set bool $_settings($what)
1531	SendCmd "dataset outline $bool"
1532	}
1533	"stretchToFit" {
1534	set bool $_settings($what)
1535	if { $bool } {
1536	set heightScale [GetHeightmapScale]
1537	if {$heightScale == 0} {
1538	SendCmd "camera aspect window"
1539	} else {
1540	SendCmd "camera aspect square"
1541	}
1542	} else {
1543	SendCmd "camera aspect native"
1544	}
1545	}
1546	"wireframe" {
1547	set bool $_settings($what)
1548	SendCmd "heightmap wireframe $bool"
1549	}
1550	default {
1551	error "don't know how to fix $what"
1552	}
1553	}
1554	}
1555
1556	#
1557	# RequestLegend --
1558	#
1559	# Request a new legend from the server. The size of the legend
1560	# is determined from the height of the canvas.
1561	#
1562	# This should be called when
1563	# 1. A new current colormap is set.
1564	# 2. Window is resized.
1565	# 3. The limits of the data have changed. (Just need a redraw).
1566	# 4. Number of isolines have changed. (Just need a redraw).
1567	# 5. Legend becomes visible (Just need a redraw).
1568	#
1569	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1570	set _legendPending 0
1571	set font "Arial 8"
1572	set w 12
1573	set lineht [font metrics $font -linespace]
1574	# color ramp height = (canvas height) - (min and max value lines) - 2
1575	set h [expr {$_height - 2 * ($lineht + 2)}]
1576	set _legendHeight $h
1577
1578	set fname $_curFldName
1579	if { $fname == "component" } {
1580	set title ""
1581	} else {
1582	if { [info exists _fields($fname)] } {
1583	foreach { title units } $_fields($fname) break
1584	if { $units != "" } {
1585	set title [format "%s (%s)" $title $units]
1586	}
1587	} else {
1588	set title $fname
1589	}
1590	}
1591	# If there's a title too, substract one more line
1592	if { $title != "" } {
1593	incr h -$lineht
1594	}
1595	if { $h < 1} {
1596	return
1597	}
1598	# Set the legend on the first heightmap dataset.
1599	if { $_currentColormap != "" } {
1600	set cmap $_currentColormap
1601	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1602	#SendCmd "heightmap colormode scalar $_curFldName"
1603	#SendCmd "dataset scalar $_curFldName"
1604	}
1605	}
1606
1607	#
1608	# ResetAxes --
1609	#
1610	# Set axis z bounds and range
1611	#
1612	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1613	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1614	SendCmd "dataset maprange all"
1615	SendCmd "axis autorange z on"
1616	SendCmd "axis autobounds z on"
1617	return
1618	}
1619	foreach { xmin xmax } $_limits(x) break
1620	foreach { ymin ymax } $_limits(y) break
1621	foreach { vmin vmax } $_limits(v) break
1622	set dataRange [expr $vmax - $vmin]
1623	set boundsRange [expr $xmax - $xmin]
1624	set r [expr $ymax - $ymin]
1625	if {$r > $boundsRange} {
1626	set boundsRange $r
1627	}
1628	if {$dataRange < 1.0e-16} {
1629	set dataScale 1.0
1630	} else {
1631	set dataScale [expr $boundsRange / $dataRange]
1632	}
1633	set heightScale [GetHeightmapScale]
1634	set bMin [expr $heightScale * $dataScale * $vmin]
1635	set bMax [expr $heightScale * $dataScale * $vmax]
1636	SendCmd "dataset maprange explicit $_limits(v) $_curFldName"
1637	SendCmd "axis bounds z $bMin $bMax"
1638	SendCmd "axis range z $_limits(v)"
1639	}
1640
1641	#
1642	# SetCurrentColormap --
1643	#
1644	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1645	array set style {
1646	-color BCGYR
1647	-levels 10
1648	-opacity 1.0
1649	}
1650	array set style $stylelist
1651
1652	set name "$style(-color):$style(-levels):$style(-opacity)"
1653	if { ![info exists _colormaps($name)] } {
1654	set stylelist [array get style]
1655	BuildColormap $name $stylelist
1656	set _colormaps($name) $stylelist
1657	}
1658	set _currentColormap $name
1659	}
1660
1661
1662	#
1663	# BuildColormap --
1664	#
1665	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1666	array set style $stylelist
1667	set cmap [ColorsToColormap $style(-color)]
1668	if { [llength $cmap] == 0 } {
1669	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1670	}
1671	if { ![info exists _settings(opacity)] } {
1672	set _settings(opacity) $style(-opacity)
1673	}
1674	set max $_settings(opacity)
1675
1676	set wmap "0.0 1.0 1.0 1.0"
1677	SendCmd "colormap add $name { $cmap } { $wmap }"
1678	}
1679
1680	# ----------------------------------------------------------------------
1681	# CONFIGURATION OPTION: -mode
1682	# ----------------------------------------------------------------------
1683	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1684	switch -- $itk_option(-mode) {
1685	"heightmap" {
1686	set _settings(isHeightmap) 1
1687	}
1688	"contour" {
1689	set _settings(isHeightmap) 0
1690	}
1691	default {
1692	error "unknown mode settings \"$itk_option(-mode)\""
1693	}
1694	}
1695	AdjustSetting isHeightmap
1696	}
1697
1698	# ----------------------------------------------------------------------
1699	# CONFIGURATION OPTION: -plotbackground
1700	# ----------------------------------------------------------------------
1701	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1702	if { [isconnected] } {
1703	set rgb [Color2RGB $itk_option(-plotbackground)]
1704	SendCmd "screen bgcolor $rgb"
1705	$itk_component(view) configure -background $itk_option(-plotbackground)
1706	}
1707	}
1708
1709	# ----------------------------------------------------------------------
1710	# CONFIGURATION OPTION: -plotforeground
1711	# ----------------------------------------------------------------------
1712	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1713	if { [isconnected] } {
1714	set rgb [Color2RGB $itk_option(-plotforeground)]
1715	SendCmd "dataset color $rgb"
1716	SendCmd "axis color all $rgb"
1717	}
1718	}
1719
1720	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1721	lappend limits x [$dataobj limits x]
1722	lappend limits y [$dataobj limits y]
1723	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1724	set vlim [$dataobj limits v]
1725	}
1726	lappend limits v $vlim
1727	return $limits
1728	}
1729
1730	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1731
1732	set fg [option get $itk_component(hull) font Font]
1733	#set bfg [option get $itk_component(hull) boldFont Font]
1734
1735	set inner [$itk_component(main) insert end \
1736	-title "Contour/Surface Settings" \
1737	-icon [Rappture::icon contour]]
1738	$inner configure -borderwidth 4
1739
1740	checkbutton $inner.legend \
1741	-text "Legend" \
1742	-variable [itcl::scope _settings(legendVisible)] \
1743	-command [itcl::code $this AdjustSetting legendVisible] \
1744	-font "Arial 9"
1745
1746	checkbutton $inner.wireframe \
1747	-text "Wireframe" \
1748	-variable [itcl::scope _settings(wireframe)] \
1749	-command [itcl::code $this AdjustSetting wireframe] \
1750	-font "Arial 9"
1751
1752	itk_component add lighting {
1753	checkbutton $inner.lighting \
1754	-text "Enable Lighting" \
1755	-variable [itcl::scope _settings(lighting)] \
1756	-command [itcl::code $this AdjustSetting lighting] \
1757	-font "Arial 9"
1758	} {
1759	ignore -font
1760	}
1761	checkbutton $inner.edges \
1762	-text "Edges" \
1763	-variable [itcl::scope _settings(edges)] \
1764	-command [itcl::code $this AdjustSetting edges] \
1765	-font "Arial 9"
1766
1767	checkbutton $inner.outline \
1768	-text "Outline" \
1769	-variable [itcl::scope _settings(outline)] \
1770	-command [itcl::code $this AdjustSetting outline] \
1771	-font "Arial 9"
1772
1773	checkbutton $inner.stretch \
1774	-text "Stretch to fit" \
1775	-variable [itcl::scope _settings(stretchToFit)] \
1776	-command [itcl::code $this AdjustSetting stretchToFit] \
1777	-font "Arial 9"
1778
1779	checkbutton $inner.isolines \
1780	-text "Isolines" \
1781	-variable [itcl::scope _settings(isolinesVisible)] \
1782	-command [itcl::code $this AdjustSetting isolinesVisible] \
1783	-font "Arial 9"
1784
1785	itk_component add field_l {
1786	label $inner.field_l -text "Field" -font "Arial 9"
1787	} {
1788	ignore -font
1789	}
1790	itk_component add field {
1791	Rappture::Combobox $inner.field -width 10 -editable no
1792	}
1793	bind $inner.field <<Value>> \
1794	[itcl::code $this AdjustSetting field]
1795
1796	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1797	itk_component add colormap {
1798	Rappture::Combobox $inner.colormap -width 10 -editable no
1799	}
1800	$inner.colormap choices insert end \
1801	"BCGYR" "BCGYR" \
1802	"BGYOR" "BGYOR" \
1803	"blue" "blue" \
1804	"blue-to-brown" "blue-to-brown" \
1805	"blue-to-orange" "blue-to-orange" \
1806	"blue-to-grey" "blue-to-grey" \
1807	"green-to-magenta" "green-to-magenta" \
1808	"greyscale" "greyscale" \
1809	"nanohub" "nanohub" \
1810	"rainbow" "rainbow" \
1811	"spectral" "spectral" \
1812	"ROYGB" "ROYGB" \
1813	"RYGCB" "RYGCB" \
1814	"brown-to-blue" "brown-to-blue" \
1815	"grey-to-blue" "grey-to-blue" \
1816	"orange-to-blue" "orange-to-blue" \
1817	"none" "none"
1818
1819	$itk_component(colormap) value "BCGYR"
1820	bind $inner.colormap <<Value>> \
1821	[itcl::code $this AdjustSetting colormap]
1822
1823	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1824	itk_component add isolinecolor {
1825	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1826	}
1827	$inner.isolinecolor choices insert end \
1828	"black" "black" \
1829	"blue" "blue" \
1830	"cyan" "cyan" \
1831	"green" "green" \
1832	"grey" "grey" \
1833	"magenta" "magenta" \
1834	"orange" "orange" \
1835	"red" "red" \
1836	"white" "white" \
1837	"none" "none"
1838
1839	$itk_component(isolinecolor) value "black"
1840	bind $inner.isolinecolor <<Value>> \
1841	[itcl::code $this AdjustSetting isolineColor]
1842
1843	label $inner.background_l -text "Background Color" -font "Arial 9"
1844	itk_component add background {
1845	Rappture::Combobox $inner.background -width 10 -editable no
1846	}
1847	$inner.background choices insert end \
1848	"black" "black" \
1849	"white" "white" \
1850	"grey" "grey"
1851
1852	$itk_component(background) value "white"
1853	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1854
1855	itk_component add opacity_l {
1856	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1857	} {
1858	ignore -font
1859	}
1860	itk_component add opacity {
1861	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1862	-variable [itcl::scope _settings(opacity)] \
1863	-showvalue off \
1864	-command [itcl::code $this AdjustSetting opacity]
1865	}
1866	itk_component add scale_l {
1867	label $inner.scale_l -text "Scale" -font "Arial 9"
1868	} {
1869	ignore -font
1870	}
1871	itk_component add scale {
1872	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1873	-variable [itcl::scope _settings(heightmapScale)] \
1874	-showvalue off \
1875	-command [itcl::code $this AdjustSetting heightmapScale]
1876	}
1877	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1878	itk_component add numisolines {
1879	Rappture::Spinint $inner.numisolines \
1880	-min 0 -max 50 -font "arial 9"
1881	}
1882	$itk_component(numisolines) value $_settings(numIsolines)
1883	bind $itk_component(numisolines) <<Value>> \
1884	[itcl::code $this AdjustSetting numIsolines]
1885
1886	frame $inner.separator -height 2 -relief sunken -bd 1
1887	blt::table $inner \
1888	0,0 $inner.field_l -anchor w -pady 2 \
1889	0,1 $inner.field -anchor w -pady 2 -fill x \
1890	1,0 $inner.colormap_l -anchor w -pady 2 \
1891	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1892	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1893	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1894	3,0 $inner.background_l -anchor w -pady 2 \
1895	3,1 $inner.background -anchor w -pady 2 -fill x \
1896	4,0 $inner.numisolines_l -anchor w -pady 2 \
1897	4,1 $inner.numisolines -anchor w -pady 2 \
1898	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1899	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1900	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1901	8,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1902	9,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1903	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1904	11,0 $inner.separator -padx 2 -fill x -cspan 2 \
1905	12,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1906	13,0 $inner.opacity_l -anchor w -pady 2 \
1907	13,1 $inner.opacity -fill x -pady 2 \
1908	14,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1909	14,1 $inner.scale -fill x -pady 2 -cspan 2 \
1910
1911	blt::table configure $inner r* c* -resize none
1912	blt::table configure $inner r15 c1 -resize expand
1913	}
1914
1915	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1916
1917	set fg [option get $itk_component(hull) font Font]
1918	#set bfg [option get $itk_component(hull) boldFont Font]
1919
1920	set inner [$itk_component(main) insert end \
1921	-title "Axis Settings" \
1922	-icon [Rappture::icon axis1]]
1923	$inner configure -borderwidth 4
1924
1925	checkbutton $inner.visible \
1926	-text "Axes" \
1927	-variable [itcl::scope _settings(axisVisible)] \
1928	-command [itcl::code $this AdjustSetting axisVisible] \
1929	-font "Arial 9"
1930	checkbutton $inner.labels \
1931	-text "Axis Labels" \
1932	-variable [itcl::scope _settings(axisLabels)] \
1933	-command [itcl::code $this AdjustSetting axisLabels] \
1934	-font "Arial 9"
1935	label $inner.grid_l -text "Grid" -font "Arial 9"
1936	checkbutton $inner.xgrid \
1937	-text "X" \
1938	-variable [itcl::scope _settings(axisXGrid)] \
1939	-command [itcl::code $this AdjustSetting axisXGrid] \
1940	-font "Arial 9"
1941	checkbutton $inner.ygrid \
1942	-text "Y" \
1943	-variable [itcl::scope _settings(axisYGrid)] \
1944	-command [itcl::code $this AdjustSetting axisYGrid] \
1945	-font "Arial 9"
1946	checkbutton $inner.zgrid \
1947	-text "Z" \
1948	-variable [itcl::scope _settings(axisZGrid)] \
1949	-command [itcl::code $this AdjustSetting axisZGrid] \
1950	-font "Arial 9"
1951	checkbutton $inner.minorticks \
1952	-text "Minor Ticks" \
1953	-variable [itcl::scope _settings(axisMinorTicks)] \
1954	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1955	-font "Arial 9"
1956
1957
1958	label $inner.mode_l -text "Mode" -font "Arial 9"
1959
1960	itk_component add axisflymode {
1961	Rappture::Combobox $inner.mode -width 10 -editable no
1962	}
1963	$inner.mode choices insert end \
1964	"static_triad" "static" \
1965	"closest_triad" "closest" \
1966	"furthest_triad" "furthest" \
1967	"outer_edges" "outer"
1968	$itk_component(axisflymode) value "static"
1969	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1970
1971	blt::table $inner \
1972	0,0 $inner.visible -anchor w -cspan 4 \
1973	1,0 $inner.labels -anchor w -cspan 4 \
1974	2,0 $inner.minorticks -anchor w -cspan 4 \
1975	4,0 $inner.grid_l -anchor w \
1976	4,1 $inner.xgrid -anchor w \
1977	4,2 $inner.ygrid -anchor w \
1978	4,3 $inner.zgrid -anchor w \
1979	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1980	5,1 $inner.mode -fill x -cspan 3
1981
1982	blt::table configure $inner r* c* -resize none
1983	blt::table configure $inner r7 c6 -resize expand
1984	blt::table configure $inner r3 -height 0.125i
1985	}
1986
1987
1988	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1989	set inner [$itk_component(main) insert end \
1990	-title "Camera Settings" \
1991	-icon [Rappture::icon camera]]
1992	$inner configure -borderwidth 4
1993
1994	set labels { qx qy qz qw xpan ypan zoom }
1995	set row 0
1996	foreach tag $labels {
1997	label $inner.${tag}label -text $tag -font "Arial 9"
1998	entry $inner.${tag} -font "Arial 9" -bg white \
1999	-textvariable [itcl::scope _view($tag)]
2000	bind $inner.${tag} <KeyPress-Return> \
2001	[itcl::code $this camera set ${tag}]
2002	blt::table $inner \
2003	$row,0 $inner.${tag}label -anchor e -pady 2 \
2004	$row,1 $inner.${tag} -anchor w -pady 2
2005	blt::table configure $inner r$row -resize none
2006	incr row
2007	}
2008	checkbutton $inner.ortho \
2009	-text "Orthographic Projection" \
2010	-variable [itcl::scope _view(ortho)] \
2011	-command [itcl::code $this camera set ortho] \
2012	-font "Arial 9"
2013	blt::table $inner \
2014	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
2015	blt::table configure $inner r$row -resize none
2016	incr row
2017
2018	blt::table configure $inner c0 c1 -resize none
2019	blt::table configure $inner c2 -resize expand
2020	blt::table configure $inner r$row -resize expand
2021	}
2022
2023	#
2024	# camera --
2025	#
2026	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2027	switch -- $option {
2028	"show" {
2029	puts [array get _view]
2030	}
2031	"set" {
2032	set who [lindex $args 0]
2033	set x $_view($who)
2034	set code [catch { string is double $x } result]
2035	if { $code != 0 \|\| !$result } {
2036	return
2037	}
2038	switch -- $who {
2039	"ortho" {
2040	if {$_view(ortho)} {
2041	SendCmd "camera mode ortho"
2042	} else {
2043	SendCmd "camera mode persp"
2044	}
2045	}
2046	"xpan" - "ypan" {
2047	PanCamera
2048	}
2049	"qx" - "qy" - "qz" - "qw" {
2050	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2051	$_arcball quaternion $q
2052	EventuallyRotate $q
2053	}
2054	"zoom" {
2055	SendCmd "camera zoom $_view(zoom)"
2056	}
2057	}
2058	}
2059	}
2060	}
2061
2062	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2063	set bytes ""
2064	foreach dataobj [get] {
2065	foreach comp [$dataobj components] {
2066	set tag $dataobj-$comp
2067	#set contents [ConvertToVtkData $dataobj $comp]
2068	set contents [$dataobj vtkdata $comp]
2069	append bytes "$contents\n\n"
2070	}
2071	}
2072	return [list .vtk $bytes]
2073	}
2074
2075	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2076	if { [image width $_image(download)] > 0 &&
2077	[image height $_image(download)] > 0 } {
2078	set bytes [$_image(download) data -format "jpeg -quality 100"]
2079	set bytes [Rappture::encoding::decode -as b64 $bytes]
2080	return [list .jpg $bytes]
2081	}
2082	return ""
2083	}
2084
2085	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2086	Rappture::Balloon $popup \
2087	-title "[Rappture::filexfer::label downloadWord] as..."
2088	set inner [$popup component inner]
2089	label $inner.summary -text "" -anchor w
2090	radiobutton $inner.vtk_button -text "VTK data file" \
2091	-variable [itcl::scope _downloadPopup(format)] \
2092	-font "Arial 9 " \
2093	-value vtk
2094	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2095	radiobutton $inner.image_button -text "Image File" \
2096	-variable [itcl::scope _downloadPopup(format)] \
2097	-font "Arial 9 " \
2098	-value image
2099	Rappture::Tooltip::for $inner.image_button \
2100	"Save as digital image."
2101
2102	button $inner.ok -text "Save" \
2103	-highlightthickness 0 -pady 2 -padx 3 \
2104	-command $command \
2105	-compound left \
2106	-image [Rappture::icon download]
2107
2108	button $inner.cancel -text "Cancel" \
2109	-highlightthickness 0 -pady 2 -padx 3 \
2110	-command [list $popup deactivate] \
2111	-compound left \
2112	-image [Rappture::icon cancel]
2113
2114	blt::table $inner \
2115	0,0 $inner.summary -cspan 2 \
2116	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2117	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2118	4,1 $inner.cancel -width .9i -fill y \
2119	4,0 $inner.ok -padx 2 -width .9i -fill y
2120	blt::table configure $inner r3 -height 4
2121	blt::table configure $inner r4 -pady 4
2122	raise $inner.image_button
2123	$inner.vtk_button invoke
2124	return $inner
2125	}
2126
2127	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2128	# Parse style string.
2129	set tag $dataobj-$comp
2130	array set style {
2131	-color BCGYR
2132	-edges 0
2133	-edgecolor black
2134	-linewidth 1.0
2135	-levels 10
2136	-visible 1
2137	}
2138	if { $_currentColormap == "" } {
2139	set stylelist [$dataobj style $comp]
2140	if { $stylelist != "" } {
2141	array set style $stylelist
2142	set stylelist [array get style]
2143	SetCurrentColormap $stylelist
2144	}
2145	$itk_component(colormap) value $style(-color)
2146	}
2147	set _settings(numIsolines) $style(-levels)
2148	set scale [GetHeightmapScale]
2149	SendCmd "heightmap add numcontours $_settings(numIsolines) $scale $tag"
2150	set _comp2scale($tag) $_settings(heightmapScale)
2151	SendCmd "heightmap edges $_settings(edges) $tag"
2152	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2153	SendCmd "heightmap colormap $_currentColormap $tag"
2154	set color [$itk_component(isolinecolor) value]
2155	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2156	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2157	}
2158
2159	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2160	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2161	return 0
2162	}
2163	return 1
2164	}
2165
2166	# ----------------------------------------------------------------------
2167	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2168	#
2169	# Invoked automatically whenever the "legend" command comes in from
2170	# the rendering server. Indicates that binary image data with the
2171	# specified <size> will follow.
2172	# ----------------------------------------------------------------------
2173	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2174	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2175	set _title $title
2176	regsub {\(mag\)} $title "" _title
2177	if { [isconnected] } {
2178	set bytes [ReceiveBytes $size]
2179	if { ![info exists _image(legend)] } {
2180	set _image(legend) [image create photo]
2181	}
2182	$_image(legend) configure -data $bytes
2183	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2184	if { [catch {DrawLegend} errs] != 0 } {
2185	global errorInfo
2186	puts stderr "errs=$errs errorInfo=$errorInfo"
2187	}
2188	}
2189	}
2190
2191	#
2192	# DrawLegend --
2193	#
2194	# Draws the legend in the own canvas on the right side of the plot area.
2195	#
2196	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2197	set fname $_curFldName
2198	set c $itk_component(view)
2199	set w [winfo width $c]
2200	set h [winfo height $c]
2201	set font "Arial 8"
2202	set lineht [font metrics $font -linespace]
2203
2204	if { $fname == "component" } {
2205	set title ""
2206	} else {
2207	if { [info exists _fields($fname)] } {
2208	foreach { title units } $_fields($fname) break
2209	if { $units != "" } {
2210	set title [format "%s (%s)" $title $units]
2211	}
2212	} else {
2213	set title $fname
2214	}
2215	}
2216	set x [expr $w - 2]
2217	if { !$_settings(legendVisible) } {
2218	$c delete legend
2219	return
2220	}
2221	if { [$c find withtag "legend"] == "" } {
2222	set y 2
2223	# If there's a legend title, create a text item for the title.
2224	$c create text $x $y \
2225	-anchor ne \
2226	-fill $itk_option(-plotforeground) -tags "title legend" \
2227	-font $font
2228	incr y $lineht
2229	$c create text $x $y \
2230	-anchor ne \
2231	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2232	-font $font
2233	incr y $lineht
2234	$c create image $x $y \
2235	-anchor ne \
2236	-image $_image(legend) -tags "colormap legend"
2237	$c create text $x [expr {$h-2}] \
2238	-anchor se \
2239	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2240	-font $font
2241	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2242	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2243	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2244	}
2245	$c delete isoline
2246	set x2 $x
2247	set iw [image width $_image(legend)]
2248	set ih [image height $_image(legend)]
2249	set x1 [expr $x2 - ($iw*12)/10]
2250	set color [$itk_component(isolinecolor) value]
2251
2252	# Draw the isolines on the legend.
2253	if { $color != "none" &&
2254	$_settings(isolinesVisible) && $_settings(numIsolines) > 0 } {
2255	set pixels [blt::vector create \#auto]
2256	set values [blt::vector create \#auto]
2257	set range [image height $_image(legend)]
2258	# Order of pixels is max to min (max is at top of legend).
2259	$pixels seq $ih 0 $_settings(numIsolines)
2260
2261	set offset [expr 2 + $lineht]
2262	# If there's a legend title, increase the offset by the line height.
2263	if { $title != "" } {
2264	incr offset $lineht
2265	}
2266	$pixels expr {round($pixels + $offset)}
2267	# Order of values is min to max.
2268	foreach { vmin vmax } $_limits(v) break
2269	$values seq $vmin $vmax $_settings(numIsolines)
2270	set tags "isoline legend"
2271	foreach pos [$pixels range 0 end] value [$values range end 0] {
2272	set y1 [expr int($pos)]
2273	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2274	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2275	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2276	}
2277	blt::vector destroy $pixels $values
2278	}
2279
2280	$c bind title <ButtonPress> [itcl::code $this Combo post]
2281	$c bind title <Enter> [itcl::code $this Combo activate]
2282	$c bind title <Leave> [itcl::code $this Combo deactivate]
2283	# Reset the item coordinates according the current size of the plot.
2284	if { [info exists _limits(v)] } {
2285	foreach { vmin vmax } $_limits(v) break
2286	$c itemconfigure vmin -text [format %g $vmin]
2287	$c itemconfigure vmax -text [format %g $vmax]
2288	}
2289	set y 2
2290	# If there's a legend title, move the title to the correct position
2291	if { $title != "" } {
2292	$c itemconfigure title -text $title
2293	$c coords title $x $y
2294	incr y $lineht
2295	}
2296	$c coords vmax $x $y
2297	incr y $lineht
2298	$c coords colormap $x $y
2299	$c coords vmin $x [expr {$h - 2}]
2300	}
2301
2302	#
2303	# EnterIsoline --
2304	#
2305	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2306	SetIsolineTip $x $y $value
2307	}
2308
2309	#
2310	# LeaveIsoline --
2311	#
2312	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2313	Rappture::Tooltip::tooltip cancel
2314	.rappturetooltip configure -icon ""
2315	}
2316
2317	#
2318	# SetIsolineTip --
2319	#
2320	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2321	set c $itk_component(view)
2322	.rappturetooltip configure -icon ""
2323
2324	# Compute the position of the tip
2325	set tx [expr $x + 15]
2326	set ty [expr $y - 5]
2327	Rappture::Tooltip::text $c "Isoline $value"
2328	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2329	}
2330
2331
2332	#
2333	# EnterLegend --
2334	#
2335	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2336	SetLegendTip $x $y
2337	}
2338
2339	#
2340	# MotionLegend --
2341	#
2342	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2343	Rappture::Tooltip::tooltip cancel
2344	set c $itk_component(view)
2345	SetLegendTip $x $y
2346	}
2347
2348	#
2349	# LeaveLegend --
2350	#
2351	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2352	Rappture::Tooltip::tooltip cancel
2353	.rappturetooltip configure -icon ""
2354	}
2355
2356	#
2357	# SetLegendTip --
2358	#
2359	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2360	set c $itk_component(view)
2361	set w [winfo width $c]
2362	set h [winfo height $c]
2363	set font "Arial 8"
2364	set lineht [font metrics $font -linespace]
2365
2366	set ih [image height $_image(legend)]
2367	set iy [expr $y - ($lineht + 2)]
2368
2369	if { [info exists _fields($_title)] } {
2370	foreach { title units } $_fields($_title) break
2371	if { $units != "" } {
2372	set title [format "%s (%s)" $title $units]
2373	}
2374	} else {
2375	set title $_title
2376	}
2377	# If there's a legend title, increase the offset by the line height.
2378	if { $title != "" } {
2379	incr iy $lineht
2380	}
2381
2382	# Make a swatch of the selected color
2383	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2384	return
2385	}
2386
2387	if { ![info exists _image(swatch)] } {
2388	set _image(swatch) [image create photo -width 24 -height 24]
2389	}
2390	set color [eval format "\#%02x%02x%02x" $pixel]
2391	$_image(swatch) put black -to 0 0 23 23
2392	$_image(swatch) put $color -to 1 1 22 22
2393	.rappturetooltip configure -icon $_image(swatch)
2394
2395	# Compute the value of the point
2396	if { [info exists _limits(v)] } {
2397	foreach { vmin vmax } $_limits(v) break
2398	set t [expr 1.0 - (double($iy) / double($ih-1))]
2399	set value [expr $t * ($vmax - $vmin) + $vmin]
2400	} else {
2401	set value 0.0
2402	}
2403	set tipx [expr $x + 15]
2404	set tipy [expr $y - 5]
2405	Rappture::Tooltip::text $c "$title $value"
2406	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2407	}
2408
2409	# ----------------------------------------------------------------------
2410	# USAGE: _dropdown post
2411	# USAGE: _dropdown unpost
2412	# USAGE: _dropdown select
2413	#
2414	# Used internally to handle the dropdown list for this combobox. The
2415	# post/unpost options are invoked when the list is posted or unposted
2416	# to manage the relief of the controlling button. The select option
2417	# is invoked whenever there is a selection from the list, to assign
2418	# the value back to the gauge.
2419	# ----------------------------------------------------------------------
2420	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2421	set c $itk_component(view)
2422	switch -- $option {
2423	post {
2424	foreach { x1 y1 x2 y2 } [$c bbox title] break
2425	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2426	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2427	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2428	tk_popup $itk_component(fieldmenu) $x $y
2429	}
2430	activate {
2431	$c itemconfigure title -fill red
2432	}
2433	deactivate {
2434	$c itemconfigure title -fill $itk_option(-plotforeground)
2435	}
2436	invoke {
2437	$itk_component(field) value $_curFldLabel
2438	AdjustSetting field
2439	}
2440	default {
2441	error "bad option \"$option\": should be post, unpost, select"
2442	}
2443	}
2444	}
2445
2446	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2447	if { $_settings(isHeightmap) } {
2448	set val $_settings(heightmapScale)
2449	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2450	return $sval
2451	}
2452	set sval 0
2453	}
2454
2455	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2456	array set style {
2457	-color BCGYR
2458	-levels 10
2459	-opacity 1.0
2460	}
2461	if { [info exists _colormap($_currentColormap)] } {
2462	array set style $_colormap($_currentColormap)
2463	}
2464	set style(-color) $color
2465	SetCurrentColormap [array get style]
2466	}
2467

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